My father´s bike won´t hold a charge. Yamaha´s website doesn´t have owners manuals for it, and I can´t find a site that does. Someone said it might be the stator coil, but we don´t know where that is. (Better with cars) Any websites that have a manual, anyone that knows what we´re talking about, books at the library, ANYTHING!!!! HELP!!! We´ve had this problem for awhile, and can´t seem to fix it. Thanks :)